Brick-machine



(No Model.) 2 Sheets-Sheet 1. J. W. 8: R. C. PENPIELD.

BRICK MACHINE. I No. 411,296. Patented Sept. 17,1889.

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J. W. & R. (3.; PENPIELD. BRICK MACHINE.

No. 411,296. Patented Sept. 17, 1889.

77%927098868. fiarye zv 8 615% fimzwm a; Z I WW 2; Jmmeys UNITED STATESPATENT OFFICE.

JAMES XV. PENFIELD AND RAYMOND C. PENFIELD, OF XVILLOUGHBY, OHIO.

BRICK-MACHINE.

SPECIFICATION forming part of Letters Patent No. 411,296, datedSeptember 17, 1889.

Application filed November 17, 1888. Serial No. 291,170. (No model.)

To all whom it may concern.-

Be it known that we, JAMES WV. PENFIELD and RAYMOND O. PENFIELD, ofWilloughby, in the county of Lake and State of Ohio, have inventedcertain new and useful Improvements in Plungers and Attachments forBrick- Machines; and we do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it pertains to make and use the same.

Our invention relates to improvements in plungers and attachments forbrick-machines; and it consists in certain features of construction andin combination of parts hereinafter described, and pointed out. in theclaims.

In the accompanying drawings, Figure l. is a side elevation, partly insection, on line or :17, Fig. 4. Fig. 2 is an elevation, in transversesection, on line as 00', Fig. 1. Fig. 3 is an elevation, in longitudinalsection, on line 3 11], Fig. 2. Fig. 4 is a plan of the plunger,portions thereof being broken away to show the construction. Fig. 5 is aperspective view of the plunger and adjacent parts.

A represents an upright pug-mill, the material from which is dischargedthrough openings a a in the bottom of the mill into thecompression-chamber B, in which chamber operates the plunger that forcesthe material out through dies I)".

D is the pugging-shaft, the same extending through chamberB and havingattached cam d for reciprocating the plunger, the cam being locatedinside said chamber and engaging anti-friction rollers K of the plunger.

The construction of the plunger is as follows:

O C are metal side frames, and those are connected by end plates 0, thelatter fitting as close as may be the Walls of the compressionchan1ber.Frames 0 are provided with a series of adj llStlllg-SCIGWS c forsupporting, holding, and adjusting the top plate E of the plunger, bymeans of which adjustment plate E may be made always to fit nicely thetop Walls of the compression-chamber, and this plate should'be adjustedfrom time to time to take up the wear of the parts, such Wear beingmostly in a vertical direction. Plate E has a slot E, in which shaft Doperates, the

slot being long enough to admit the reciprocations of the plunger,caused by the action of the aforesaid cam, without the plunger collidingwith the shaft.

Heretofore it has been found dillicult to prevent the material, underthe great pressure employed, from being forced between the ends of theadjustable top plate and the end plates of the plunger and between theengaging edges of the top plate and cut-off plates, such material forobvious reasons being very objectionable when introduced inside theplunger where it could come in contact with the cam and withgearingbelow. (Not shown.) As an improvement we provide a deep groove 0in each plate O, this groove being located approximately, as shown, andwe provide cor responding tongues e at the ends of plate E, on the underside thereof, for fitting,respectively, in the grooves c. The verticaladj ustment of plate E to take up the wear of parts is never sufficientto draw these tongues out of their engaging grooves, and by means ofsuch tongue-and-groove feature the material is prevented from enteringinside the plunger.

The cut-01f plates F are set into plate E flush on top, and are attheiredges dovetailed together, as shown at c, Fig. 2, the edges of plate Ebeing undercut and the edges of plate F being correspondingly beveled,the arrangement being such that plate F may slide endwise a limiteddistance on its bearings in plate E. Plate F has upwardly-pro jectinglugs j, that operate in groove G of the top Walls of thecompression-chamber. The outer end or shoulders g of these grooves, byengaging lugs f, stop the outward movement of plate F in position toclose the adjacent openings a, by means of which material is preventedfrom entering inside the plunger through slot E. WVith the reversestroke of the plunger plate F, by engaging shaft D, is shifted towardthe respective ends of the plunger. In other words, plate F rides on andmoves with the plunger, except as it is stopped in the one direction byengaging the puggingshaft and in the other direction by the aforesaidengagement of lugs f with shoulders g. WVhile an end of the plunger isretired i11- ward, the material is forced down from the pugging-millthrough hole a, entering this end of the compression-chamber in advanceof the plunger. With the outward movementof this end of the plungerplate F is carried along with the latter until the plate is fairlyinside and closes orifice a, whereupon plate F is estopped by theengagement of lugs and shoulders aforesaid and remains stationary, whilethe plunger-head still farther advances to force the material outthrough the opposing dies. On the reverse stroke of the plunger plate Fis carried inward until it engages shaft D, by which engagement plate Fis held stationary, while the plunger continues its stroke inward.

We have chosen to illustrate our invention in connection with adouble-acting plungermachine having dies at either end of thecompression-chamber; but our improvements are equally well adapted tothe ordinary singlestroke machine.

What we claim is 1. In a brick -machine, the combination, with ahorizontally-reeiprocatin g plunger having end plate and top plate, thelatter having vertical adjustment, of tongue-and-groove connectionbetween such plates, whereby the adjustment of the top plate does notbreak the tongue-and-groove connection between the two plates,substantially as set forth.

2. The combination, with a pug-mill having a discharge-opening therein,of plate E and cut-off plate F, the latter being set in flush with thetop surface of the former, plate E having undercut edges and plate Fhaving correspondingly-beveled edges for mutual engagement, formingsubstantially a sliding dovetail, substantially as set forth.

In testimony whereof we sign this specification, in the presence of twowitnesses, this 25th day of August, 1888.

JAMES w. PENFIELD. RAYMOND c. PENFIELD.

Witnesses:

L. W. PENFIELD, W. W. WALLACE,

